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Continuously Adjustable Fiber Attenuator

An optical fiber attenuator, optical fiber technology, applied in optics, instruments, optical components, etc., can solve problems such as troublesome operation, and achieve the effect of easy operation, stable type, and simple structure

Inactive Publication Date: 2016-04-27
CHENGDU MAKEMODE COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the optical fiber attenuator of this structure, when adjusting the distance of the microbending deformer, an adjuster is required, that is, the adjuster is adjusted to make the microbending deformer move along the guide rail to adjust the distance. According to the actual use, you can use The regulator is realized by manual, motor, voltage, magnetic field, etc. When the manual method is used, the adjustment rod of the connector is provided with threads, and the adjustment of the distance of the micro-deformer is realized by rotating the adjustment rod, which is very troublesome to operate

Method used

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  • Continuously Adjustable Fiber Attenuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 The continuously adjustable optical fiber attenuator shown includes a housing 2, an optical fiber 1 and two relative microbend deformers, the optical fiber 1 is located between the two microbend deformers, and a useful For the groove where the optical fiber 1 is placed, the microbend deformer includes an upper platen 5 with corrugations at the bottom and a lower corrugated surface 24 at the bottom of the groove, and the side walls of the groove are respectively provided with symmetrical The first guide groove 21 and the second guide groove 22, the first guide groove 21 and the second guide groove 22 are not parallel to the central axis of the optical fiber 1 and have the same angle with the optical fiber 1, the first guide groove A first adjusting cylinder 31 for adjusting the upper pressing plate 5 is movably arranged between the grooves 21, and a second adjusting cylinder 32 for adjusting the upper pressing plate 5 is movably arranged between the seco...

Embodiment 2

[0019] Such as figure 1 The continuously adjustable fiber attenuator shown in this embodiment is optimized on the basis of embodiment 1 in order to ensure the accuracy of the fiber attenuator and the length of the housing. The center of the first guide groove 21 and the optical fiber 1 The included angle between the axes is greater than 10 degrees and less than 45 degrees.

Embodiment 3

[0021] Such as figure 1 For the continuously adjustable optical fiber attenuator shown, in order to directly read the positions of the first adjustment cylinder and the second adjustment cylinder, this embodiment is optimized on the basis of the above embodiment, that is, the degree of the scale 23 is along the The line of symmetry of the first guide groove 21 and the second guide groove 22 gradually increases or decreases along both sides, and the scale is parallel to the lower corrugated surface, and is set at the line of symmetry of the first guide groove 21 and the second guide groove 22 The reading symmetry line of the scale, that is, where it is 0 or the maximum value of the scale.

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Abstract

The invention discloses a continuously adjustable optical fiber attenuator, which comprises a housing, an optical fiber and two relative microbending deformers, the optical fiber is located between the two microbending deformers, a groove for placing the optical fiber is arranged in the housing, and the microbending The deformer includes an upper platen with corrugations at the bottom and a lower corrugated surface at the bottom of the groove. The side walls of the groove are respectively provided with symmetrical first guide grooves and second guide grooves. The first guide groove and the second guide groove The second guide groove is not parallel to the central axis of the optical fiber and has the same angle with the optical fiber. A first adjustment cylinder for adjusting the upper platen is movable between the first guide grooves. The second guide groove A second adjustment cylinder for adjusting the upper platen is movably arranged between the grooves, and a scale for marking the positions of the first adjustment cylinder and the second adjustment cylinder is provided on the outer shell, which slides the first adjustment cylinder and the second adjustment cylinder. The bending degree of the optical fiber can be changed by adjusting the cylinder, which is not only simple in structure, but also easy to operate.

Description

technical field [0001] The invention relates to the field of optical fiber attenuators, in particular to continuously adjustable optical fiber attenuators. Background technique [0002] Optical fiber attenuators are passive components widely used in the field of optical communications. It is used to attenuate the input optical power, avoiding the distortion of the optical receiver due to the super strong input optical power. In order to achieve continuous adjustment, the existing optical fiber attenuator adopts a structure with a publication number of CN1658023A, which uses a microbend deformer to realize the bending degree of the optical fiber, so as to realize the modulation of the signal light intensity in the optical fiber, so as to realize adjustable light attenuation. With the optical fiber attenuator of this structure, when adjusting the distance of the microbending deformer, an adjuster is required, that is, the adjuster is adjusted to make the microbending deforme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/02
Inventor 郭仁祥蔡义炜曾应全李道斌
Owner CHENGDU MAKEMODE COMM TECH
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